There are many websites out there who provide you sell and buy options. You can search them on google and compare one another according to the services they provides.
Right. There are so many exchanges and websites where you can sell you coin but this must be done with care and comer. Reason is, you are done with your patience and you handled it so amazingly and now you are looking for your profit and result, and if this thing just gets ruined, you would be a big loser. Research properly and choose that exchange that is legit and classy.